Impromewient in coffee and spice mills



Coee Mill.-

' Patented Sept. 21, 1869.

l No. 95,135.

. e wi wu NITE."

HENRY PETRIE, .orci-ncxeo, ILLINOIS.

IMPROMENIQENTVIN COFFEEAAND SPICE MILLS.

Specification formiugpurt of Letters Patent No. 85.135. dated Septembrrl,1e`CS.

the following to be a full, clear, andiexact dea scription of the same,reference being `had to u .the accompanying drawings and the letters andgures'marked thereomwhich form a part of this specication, and in which-A Figureyl represents a top or plan view of my said mill; Fig. 2,\a sideelevation of the same; Fig. 3, a vertical sectional ,view at the line x,in l. i

The nature of my invention consists in the construction of the threehoppers, as herein-- after described, and inthe construction of thebed-plate on which the hoppers rest, with the three openingsand shells,or outside grinders, so as to make a iirm, compact, combined mill,

\ with threeseparate grinding-mills, all driven from the samedrive-wheel.

To enable those skilled in the art to understand how to manufacture anduse my invention, I will proceed to" describe the same withparticularity. A

'The same letters of reference refer to the corresponding parts in thedifferent-figures.

In theaccompanyingdrawings, A represents three hoppers, all c'ast in onecasting, so as to make a more solid and substaitial mill than when madeseparate `and fastened together, and is also less expensive tomanufacture. One hopper, being intended for grinding coffee, is iliadeas large as the'other ,two, oneof which is intended for grinding pepperand one for grinding spice.

B represents a bed-piece, which is cast with threecylinders, C, theinside of which are cast rough for grinding purposes, and conical, as

shown in a sectional view of one of them in Fignv. D\.jis'abox`,mad e oftin or other suitable material, on which the bed-piece B rests, and

it is divided into three compartments by the i partitions E. There is adrawer,F, for each of these compartments, each drawer being put in froma different side of the box D. By this arrangement no side of the box ismaterially weakened by the introduction of the drawers through 'LthenrThere is an arclrpiece, H, cast with three arms, I I I, in which thegrind` the same time grind line.

`er-shafts have their bearings. The 'ends of the arch H pass down to theedge of the hopper A, and are firm] y secured thereto by the bolts J.Said bolts also pass down through the bed-piece B vand iirmly into thenuts attached to the box D, thereby fastening the hoppers, thebed-piece, and box D securely to gether. There is a rim, a, around theedge of the openings in the bed`piece B, above the cylinders C, and thelower edge of the hoppers A are beveled off so as to fit against saidrims, as clearly shown in Fig. 3. These rims serve to keep the hoppersin place, and at the same time they make no impediment to the coffee orspice flowing down into the cylinder below.

K are grinding-cones, and they are cast with arough surface forgrinding. The creases therein are made coarse at the top and fine towardthebottom, so as to grind faster, and at The creases may be parallel orcrossed, as desired.

The spindles L and M are cast with the core and also the agitator O,which extends up into the hopper and agitates the contents there of, andcauses it to feed regularly to the grindA ing-cone.

P is a cross-piece, one end of which rests in a loop formed by the wireQ suspended from the bed-piece B, the other end resting in a rod, R,which can be shortened by the nut S. The spindle M of the grinding-coneB has a step in the cross-piece l?, and the step is raised and lowered,which regulates the cone K to make it grind tine or coarse, by raisingor lowering` the rod B, as above described. I cast the grinding-cones Kwith the base nearly as small as the top, so that no part of thegrinding-sur face' is far from the perpendicular axial line drawnthrough the center, so that it will require less power to grind, andwhen Iwish to increase the grinding-surface I simply cast a longer cone.

The mainy driving-shaft T of the mill has a bearing in the arch H, and astep on the bedpiece B; or it may pass through the bed-piece B, having abearing therein.

The small drive-wheel U' is cast with the shaft T, and the ,crank V isscrewed on the end ofthe shaft. The drive-wheelU engages with the threecog-wheels of the shafts L L L, so that by turning the crank Vthe threemills are put in operation. The drive-wheel U is yoi" the bed-piece B,near its edge, for the top edge of the box D to rest against, so that itwill be held more securely in place.

Having thus fully described the construetion and use ofmy invention, Iwill now specify what I claim and desire to secure by Letters Patentf l.The hoppers A A A, east in one piece, Substantially as herein described.

2. In combination with the hoppers A A A, when cast in one piece, thebed-plate B, and grindingeylinders C, substantially as herein described.

3. The box E, and drawers F, in combination Withhe bed-plate B. andgrinding-@lina ders C, Substantially as herein described.

HENRY PETRUS.

Vitnesses:

J. L. COBURN, L. L. CoBURN.

